To the players claiming all the dungeons / raids were nerfed by 1.12. This is fundamentally false, but at the same time a little true.
The mobs did not change, the player power is what was changed.
In the later patches many items that were green became blue, the talents were all adjusted, for some classes this was a fairly massive buff, for others not so much. The itemization for many items was adjusted which often increased their value astronomically compared to before the change.
Add on to this the simple fact that at the beginning many players had no idea which stats were more important, (hello spirit rogue my old friend) or exactly how different weapons interacted with skills.
By the end of vanilla the theorycrafters had it pretty much all worked out, X was better than Y because Z. Some people cared, most didn’t. Most simply got the basics and that was good enough.
As far as the pirate servers go, they had some data (from the player side) and they had some ideas (from the theorycrafters) and they spliced it all together with a health dose of guesswork and hope. There are a lot of mistakes on pservers, some because they didn’t know and others were done on purpose. The problem with all of them is that since they never had any of the original code/data they base the whole thing off the player side.
Did Boss A have 10000 armor or did it have 2k armor and a passive damage reduction of 45%? Does it have 200 resist or does it simply absorb X elemental damage? Did these debuffs stack or is only the stronger one actually doing anything?
Many of these things are impossible to determine from the player side without a ton of testing, which often was simply never done. The reason it wasn’t done was because to a player the mechanics and stats of monsters is mostly irrelevant, the only thing relevant was how much damage they dealt and how much they could take.
As for the elite damage on the pservers, most of that was intentionally increased. Both to make it less profitable to solo (for higher level players) and also because some of the creators either felt it wasn’t challenging enough with the later talents or they simply remembered it being harder than it actually was.
Using any form of proof from a pirate server is useless because they are 100% inaccurate. Close is not accurate.
As my old programming prof used to say, " Garbage in, Garbage out ".